268285
In the circuit shown, the reading of the voltmeter and the ammeter are
1 \(4 \mathrm{~V}, 0.2 \mathrm{~A}\)
2 \(2 \mathrm{~V}, 0.4 \mathrm{~A}\)
3 \(3 \mathrm{~V}, 0.6 \mathrm{~A}\)
4 \(4 \mathrm{~V}, 0.04 \mathrm{~A}\)
Explanation:
combination of resistors
Current Electricity
268286
The resistance of a wire of \(100 \mathrm{~cm}\) length is \(10_{\Omega}\). Now, it is cut into 10 equal parts and all of them aretwisted to form a singlebundle. Its resistance is
1 \(1_{\Omega}\)
2 \(0.5 \Omega\)
3 \(5 \Omega\)
4 \(0.1 \Omega\)
Explanation:
\(\underset{\text { eff }}{R}=\frac{R}{n^{2}}\)
Current Electricity
268287
A metallic wire of resistance 20 ohm stretched until its length is doubled. Its resistance is
1 \(20 \Omega\)
2 \(40 \Omega\)
3 \(80 \Omega\)
4 \(60_{\Omega}\)
Explanation:
\(R=\frac{\rho l}{A}, V=A J\)
Current Electricity
268288
A wire of resistance \(20 \Omega\) is bent in the form of a square. The resistance between theends of diagonal is
NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
Current Electricity
268285
In the circuit shown, the reading of the voltmeter and the ammeter are
1 \(4 \mathrm{~V}, 0.2 \mathrm{~A}\)
2 \(2 \mathrm{~V}, 0.4 \mathrm{~A}\)
3 \(3 \mathrm{~V}, 0.6 \mathrm{~A}\)
4 \(4 \mathrm{~V}, 0.04 \mathrm{~A}\)
Explanation:
combination of resistors
Current Electricity
268286
The resistance of a wire of \(100 \mathrm{~cm}\) length is \(10_{\Omega}\). Now, it is cut into 10 equal parts and all of them aretwisted to form a singlebundle. Its resistance is
1 \(1_{\Omega}\)
2 \(0.5 \Omega\)
3 \(5 \Omega\)
4 \(0.1 \Omega\)
Explanation:
\(\underset{\text { eff }}{R}=\frac{R}{n^{2}}\)
Current Electricity
268287
A metallic wire of resistance 20 ohm stretched until its length is doubled. Its resistance is
1 \(20 \Omega\)
2 \(40 \Omega\)
3 \(80 \Omega\)
4 \(60_{\Omega}\)
Explanation:
\(R=\frac{\rho l}{A}, V=A J\)
Current Electricity
268288
A wire of resistance \(20 \Omega\) is bent in the form of a square. The resistance between theends of diagonal is
268285
In the circuit shown, the reading of the voltmeter and the ammeter are
1 \(4 \mathrm{~V}, 0.2 \mathrm{~A}\)
2 \(2 \mathrm{~V}, 0.4 \mathrm{~A}\)
3 \(3 \mathrm{~V}, 0.6 \mathrm{~A}\)
4 \(4 \mathrm{~V}, 0.04 \mathrm{~A}\)
Explanation:
combination of resistors
Current Electricity
268286
The resistance of a wire of \(100 \mathrm{~cm}\) length is \(10_{\Omega}\). Now, it is cut into 10 equal parts and all of them aretwisted to form a singlebundle. Its resistance is
1 \(1_{\Omega}\)
2 \(0.5 \Omega\)
3 \(5 \Omega\)
4 \(0.1 \Omega\)
Explanation:
\(\underset{\text { eff }}{R}=\frac{R}{n^{2}}\)
Current Electricity
268287
A metallic wire of resistance 20 ohm stretched until its length is doubled. Its resistance is
1 \(20 \Omega\)
2 \(40 \Omega\)
3 \(80 \Omega\)
4 \(60_{\Omega}\)
Explanation:
\(R=\frac{\rho l}{A}, V=A J\)
Current Electricity
268288
A wire of resistance \(20 \Omega\) is bent in the form of a square. The resistance between theends of diagonal is
268285
In the circuit shown, the reading of the voltmeter and the ammeter are
1 \(4 \mathrm{~V}, 0.2 \mathrm{~A}\)
2 \(2 \mathrm{~V}, 0.4 \mathrm{~A}\)
3 \(3 \mathrm{~V}, 0.6 \mathrm{~A}\)
4 \(4 \mathrm{~V}, 0.04 \mathrm{~A}\)
Explanation:
combination of resistors
Current Electricity
268286
The resistance of a wire of \(100 \mathrm{~cm}\) length is \(10_{\Omega}\). Now, it is cut into 10 equal parts and all of them aretwisted to form a singlebundle. Its resistance is
1 \(1_{\Omega}\)
2 \(0.5 \Omega\)
3 \(5 \Omega\)
4 \(0.1 \Omega\)
Explanation:
\(\underset{\text { eff }}{R}=\frac{R}{n^{2}}\)
Current Electricity
268287
A metallic wire of resistance 20 ohm stretched until its length is doubled. Its resistance is
1 \(20 \Omega\)
2 \(40 \Omega\)
3 \(80 \Omega\)
4 \(60_{\Omega}\)
Explanation:
\(R=\frac{\rho l}{A}, V=A J\)
Current Electricity
268288
A wire of resistance \(20 \Omega\) is bent in the form of a square. The resistance between theends of diagonal is
