358127
Assertion : One coulomb is the charge flowing through a wire in 1\(s\), if the current is 1\(A\). Reason : \( - 1C\) has \(6 \times {10^{18}}\) electron
1 Both assertion and reason are correct and reason is the correct explanation of assertion.
2 Both assertion and reason are correct but reason is not the correct explanation of assertion.
3 Assertion is correct but reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Current is the flow of charge per unit time, \(I = \frac{q}{t} \Rightarrow q = It\) \( \Rightarrow I = 1,t = 1\) gives \(q = 1\,\,{\rm{unit}}\) \( - 1C\) has \(\frac{1}{{1 \cdot 6 \times {{10}^{ - 19}}}} = 6 \times {10^{18}}\) electrons approximately.
PHXII01:ELECTRIC CHARGES AND FIELDS
358128
If a soap bubble is given a negative charge, then its radius
1 Decreases
2 Increases
3 Remains unchanged
4 Nothing can be predicted as the information is insufficient
Explanation:
Radius of the bubble increases because of electrostatic repulsion of charges on the surface
PHXII01:ELECTRIC CHARGES AND FIELDS
358129
Match the Column I with Column II Column I Column II A Like charges P Of two types B Unlike charges Q Repel each other C Charge can be R Attract each other D Charges are S Neutralised, if they are equal and opposite
1 A-P, B-Q, C-R, D-S
2 A-Q, B-P, C-R, D-S
3 A-S, B-P, C-R, D-Q
4 A-Q, B-R, C-S, D-P
Explanation:
Option (4) is correct.
PHXII01:ELECTRIC CHARGES AND FIELDS
358130
When a soap bubble is charged
1 The radius remains the same
2 Its radius may increase or decrease
3 Its radius increases
4 Its radius decreases
Explanation:
When a soap bubble is charged, the charge gets uniformly distributed over its surface which results in repulsion between nearby charges. This causes the bubble to expand.
358127
Assertion : One coulomb is the charge flowing through a wire in 1\(s\), if the current is 1\(A\). Reason : \( - 1C\) has \(6 \times {10^{18}}\) electron
1 Both assertion and reason are correct and reason is the correct explanation of assertion.
2 Both assertion and reason are correct but reason is not the correct explanation of assertion.
3 Assertion is correct but reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Current is the flow of charge per unit time, \(I = \frac{q}{t} \Rightarrow q = It\) \( \Rightarrow I = 1,t = 1\) gives \(q = 1\,\,{\rm{unit}}\) \( - 1C\) has \(\frac{1}{{1 \cdot 6 \times {{10}^{ - 19}}}} = 6 \times {10^{18}}\) electrons approximately.
PHXII01:ELECTRIC CHARGES AND FIELDS
358128
If a soap bubble is given a negative charge, then its radius
1 Decreases
2 Increases
3 Remains unchanged
4 Nothing can be predicted as the information is insufficient
Explanation:
Radius of the bubble increases because of electrostatic repulsion of charges on the surface
PHXII01:ELECTRIC CHARGES AND FIELDS
358129
Match the Column I with Column II Column I Column II A Like charges P Of two types B Unlike charges Q Repel each other C Charge can be R Attract each other D Charges are S Neutralised, if they are equal and opposite
1 A-P, B-Q, C-R, D-S
2 A-Q, B-P, C-R, D-S
3 A-S, B-P, C-R, D-Q
4 A-Q, B-R, C-S, D-P
Explanation:
Option (4) is correct.
PHXII01:ELECTRIC CHARGES AND FIELDS
358130
When a soap bubble is charged
1 The radius remains the same
2 Its radius may increase or decrease
3 Its radius increases
4 Its radius decreases
Explanation:
When a soap bubble is charged, the charge gets uniformly distributed over its surface which results in repulsion between nearby charges. This causes the bubble to expand.
358127
Assertion : One coulomb is the charge flowing through a wire in 1\(s\), if the current is 1\(A\). Reason : \( - 1C\) has \(6 \times {10^{18}}\) electron
1 Both assertion and reason are correct and reason is the correct explanation of assertion.
2 Both assertion and reason are correct but reason is not the correct explanation of assertion.
3 Assertion is correct but reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Current is the flow of charge per unit time, \(I = \frac{q}{t} \Rightarrow q = It\) \( \Rightarrow I = 1,t = 1\) gives \(q = 1\,\,{\rm{unit}}\) \( - 1C\) has \(\frac{1}{{1 \cdot 6 \times {{10}^{ - 19}}}} = 6 \times {10^{18}}\) electrons approximately.
PHXII01:ELECTRIC CHARGES AND FIELDS
358128
If a soap bubble is given a negative charge, then its radius
1 Decreases
2 Increases
3 Remains unchanged
4 Nothing can be predicted as the information is insufficient
Explanation:
Radius of the bubble increases because of electrostatic repulsion of charges on the surface
PHXII01:ELECTRIC CHARGES AND FIELDS
358129
Match the Column I with Column II Column I Column II A Like charges P Of two types B Unlike charges Q Repel each other C Charge can be R Attract each other D Charges are S Neutralised, if they are equal and opposite
1 A-P, B-Q, C-R, D-S
2 A-Q, B-P, C-R, D-S
3 A-S, B-P, C-R, D-Q
4 A-Q, B-R, C-S, D-P
Explanation:
Option (4) is correct.
PHXII01:ELECTRIC CHARGES AND FIELDS
358130
When a soap bubble is charged
1 The radius remains the same
2 Its radius may increase or decrease
3 Its radius increases
4 Its radius decreases
Explanation:
When a soap bubble is charged, the charge gets uniformly distributed over its surface which results in repulsion between nearby charges. This causes the bubble to expand.
358127
Assertion : One coulomb is the charge flowing through a wire in 1\(s\), if the current is 1\(A\). Reason : \( - 1C\) has \(6 \times {10^{18}}\) electron
1 Both assertion and reason are correct and reason is the correct explanation of assertion.
2 Both assertion and reason are correct but reason is not the correct explanation of assertion.
3 Assertion is correct but reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Current is the flow of charge per unit time, \(I = \frac{q}{t} \Rightarrow q = It\) \( \Rightarrow I = 1,t = 1\) gives \(q = 1\,\,{\rm{unit}}\) \( - 1C\) has \(\frac{1}{{1 \cdot 6 \times {{10}^{ - 19}}}} = 6 \times {10^{18}}\) electrons approximately.
PHXII01:ELECTRIC CHARGES AND FIELDS
358128
If a soap bubble is given a negative charge, then its radius
1 Decreases
2 Increases
3 Remains unchanged
4 Nothing can be predicted as the information is insufficient
Explanation:
Radius of the bubble increases because of electrostatic repulsion of charges on the surface
PHXII01:ELECTRIC CHARGES AND FIELDS
358129
Match the Column I with Column II Column I Column II A Like charges P Of two types B Unlike charges Q Repel each other C Charge can be R Attract each other D Charges are S Neutralised, if they are equal and opposite
1 A-P, B-Q, C-R, D-S
2 A-Q, B-P, C-R, D-S
3 A-S, B-P, C-R, D-Q
4 A-Q, B-R, C-S, D-P
Explanation:
Option (4) is correct.
PHXII01:ELECTRIC CHARGES AND FIELDS
358130
When a soap bubble is charged
1 The radius remains the same
2 Its radius may increase or decrease
3 Its radius increases
4 Its radius decreases
Explanation:
When a soap bubble is charged, the charge gets uniformly distributed over its surface which results in repulsion between nearby charges. This causes the bubble to expand.
