QBManager

Electrostatic Potentials and Capacitance

268088 Two spheres of radii $12 cm$ and $16 cm$ have equal charge. The ratio of their energies is

1

3 : 4

2

4 : 3

3

1 : 2

4

2 : 1

Explanation:

$U = \frac{q^{2}}{2 C}, U α \frac{1}{r}$

Electrostatic Potentials and Capacitance

268089 A condenser of capacity $10 μ F$ is charged to a potential of $500 V$ . I ts terminals are then connected to those of an uncharged condenser of capacity $40 μ F$ . The loss of energy in connecting them together is

1 1J

2 2.5

3 10 J

4

12 J

Explanation:

$Δ E = \frac{1}{2} \frac{C_{1} C_{2}}{C_{1} + C_{2}} {(V_{1} - V_{2})}^{2}$

Electrostatic Potentials and Capacitance

268090 A $2 μ F$ condenser is charged to $500 V$ and then the platesarejoined through a resistance. The heat produced in the resistance in joule is

1

50 \times 10^{- 2}

Joule

2

25 \times 10^{- 2}

Joule

3

0.25 \times 10^{- 2} J

oule

4

0.5 \times 10^{- 2}

J oule

Explanation:

Energy Stored $= \frac{1}{2} c v^{2}$

Electrostatic Potentials and Capacitance

268104 A capacitor of 8 micro farad is charged to a potential of $1000 V$ . The energy stored in the capacitor is

1

8 J

2

12 J

3

2 J

4

4 J

Explanation:

$U = 1 / 2 C V^{2}$

Electrostatic Potentials and Capacitance

268088 Two spheres of radii $12 cm$ and $16 cm$ have equal charge. The ratio of their energies is

1

3 : 4

2

4 : 3

3

1 : 2

4

2 : 1

Explanation:

$U = \frac{q^{2}}{2 C}, U α \frac{1}{r}$

Electrostatic Potentials and Capacitance

268089 A condenser of capacity $10 μ F$ is charged to a potential of $500 V$ . I ts terminals are then connected to those of an uncharged condenser of capacity $40 μ F$ . The loss of energy in connecting them together is

1 1J

2 2.5

3 10 J

4

12 J

Explanation:

$Δ E = \frac{1}{2} \frac{C_{1} C_{2}}{C_{1} + C_{2}} {(V_{1} - V_{2})}^{2}$

Electrostatic Potentials and Capacitance

268090 A $2 μ F$ condenser is charged to $500 V$ and then the platesarejoined through a resistance. The heat produced in the resistance in joule is

1

50 \times 10^{- 2}

Joule

2

25 \times 10^{- 2}

Joule

3

0.25 \times 10^{- 2} J

oule

4

0.5 \times 10^{- 2}

J oule

Explanation:

Energy Stored $= \frac{1}{2} c v^{2}$

Electrostatic Potentials and Capacitance

268104 A capacitor of 8 micro farad is charged to a potential of $1000 V$ . The energy stored in the capacitor is

1

8 J

2

12 J

3

2 J

4

4 J

Explanation:

$U = 1 / 2 C V^{2}$

Electrostatic Potentials and Capacitance

268088 Two spheres of radii $12 cm$ and $16 cm$ have equal charge. The ratio of their energies is

1

3 : 4

2

4 : 3

3

1 : 2

4

2 : 1

Explanation:

$U = \frac{q^{2}}{2 C}, U α \frac{1}{r}$

Electrostatic Potentials and Capacitance

268089 A condenser of capacity $10 μ F$ is charged to a potential of $500 V$ . I ts terminals are then connected to those of an uncharged condenser of capacity $40 μ F$ . The loss of energy in connecting them together is

1 1J

2 2.5

3 10 J

4

12 J

Explanation:

$Δ E = \frac{1}{2} \frac{C_{1} C_{2}}{C_{1} + C_{2}} {(V_{1} - V_{2})}^{2}$

Electrostatic Potentials and Capacitance

268090 A $2 μ F$ condenser is charged to $500 V$ and then the platesarejoined through a resistance. The heat produced in the resistance in joule is

1

50 \times 10^{- 2}

Joule

2

25 \times 10^{- 2}

Joule

3

0.25 \times 10^{- 2} J

oule

4

0.5 \times 10^{- 2}

J oule

Explanation:

Energy Stored $= \frac{1}{2} c v^{2}$

Electrostatic Potentials and Capacitance

268104 A capacitor of 8 micro farad is charged to a potential of $1000 V$ . The energy stored in the capacitor is

1

8 J

2

12 J

3

2 J

4

4 J

Explanation:

$U = 1 / 2 C V^{2}$

Electrostatic Potentials and Capacitance

268088 Two spheres of radii $12 cm$ and $16 cm$ have equal charge. The ratio of their energies is

1

3 : 4

2

4 : 3

3

1 : 2

4

2 : 1

Explanation:

$U = \frac{q^{2}}{2 C}, U α \frac{1}{r}$

Electrostatic Potentials and Capacitance

268089 A condenser of capacity $10 μ F$ is charged to a potential of $500 V$ . I ts terminals are then connected to those of an uncharged condenser of capacity $40 μ F$ . The loss of energy in connecting them together is

1 1J

2 2.5

3 10 J

4

12 J

Explanation:

$Δ E = \frac{1}{2} \frac{C_{1} C_{2}}{C_{1} + C_{2}} {(V_{1} - V_{2})}^{2}$

Electrostatic Potentials and Capacitance

268090 A $2 μ F$ condenser is charged to $500 V$ and then the platesarejoined through a resistance. The heat produced in the resistance in joule is

1

50 \times 10^{- 2}

Joule

2

25 \times 10^{- 2}

Joule

3

0.25 \times 10^{- 2} J

oule

4

0.5 \times 10^{- 2}

J oule

Explanation:

Energy Stored $= \frac{1}{2} c v^{2}$

Electrostatic Potentials and Capacitance

268104 A capacitor of 8 micro farad is charged to a potential of $1000 V$ . The energy stored in the capacitor is

1

8 J

2

12 J

3

2 J

4

4 J

Explanation:

$U = 1 / 2 C V^{2}$