Free Printable Kirchhoff's Law, Cells DPP-11(ISC)

1.

Kirchhoff's second law is based on the law of conservation of

a)

Charge

b)

Energy

c)

Momentum

d)

Sum of mass and energy

2.

The magnitude and direction of the current in the circuit shown will be

a)

7/3 A from a to b through e

b)

7/3 A from b to a through e

c)

1A from b to a through e

d)

1A from a to b through e

3.

The e.m.f. of a cell is E volts and internal resistance is ohm. The resistance in external circuit is also r ohm. The p.d. across the cell will be

a)

E/2

b)

2E

c)

4E

d)

E/4

4.

A cell whose e.m.f. is 2 V and internal resistance is $0.1\Omega$ , is connected with a resistance of $3.9\Omega$ . The voltage across the cell terminal will be

a)

0.50 V

b)

1.90 V

c)

1.95 V

d)

2.0 V

5.

n identical cells each of e.m.f. E and internal resistance r are connected in series. An external resistance R is connected in series to this combination. The current through R is

a)

$\frac{nE}{R+nr}$

b)

$\frac{nE}{nR+r}$

c)

$\frac{E}{R+nr}$

d)

$\frac{nE}{R+r}$

6.

A new flashlight cell of e.m.f. 1.5 volts gives a current of 15 amps, when connected directly to an ammeter of resistance 0.04 $\Omega$ . The internal resistance of cell is

a)

$0.04\Omega$

b)

$0.04\Omega$

c)

$0.04\Omega$

d)

$10\Omega$

7.

The figure shows a network of currents. The magnitude of currents is shown here. The current i will be

a)

3 A

b)

13 A

c)

23 A

d)

– 3 A

8.

The internal resistance of a cell is the resistance of

a)

Electrodes of the cell

b)

Vessel of the cell

c)

Electrolyte used in the cell

d)

Material used in the cell

9.

If six identical cells each having an emf of 6V are connected in parallel ,the emf of the combination is

a)

1 V

b)

36 V

c)

1/6 V

d)

6 V

10.

The maximum power drawn out of the cell from a source is given by (where r is internal resistance)

a)

$\frac{E^2}{2r}$

b)

$\frac{E^2}{4r}$

c)

$\frac{E^2}{r}$

d)

$\frac{E^2}{3r}$

Kirchhoff's Law, Cells DPP-11(ISC)

Total questions: 10

Worksheet time: 10mins

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