1. An electric current of 10 A is the same as

a) 10 J/C**b) 10 V/C**

c) 10C/sec

d) 10 W/sec

2. Resistance of a wire is yΩ. The wire is stretched to triple its length, then the resistance becomes

a) y/3

b) 3y**c) 6y**

d) y/6

3. In which of the following cases is Ohm’s law not applicable?

a) Electrolytes

b) Arc lamps**c) Insulators**

d) Vacuum ratio values

4. A copper wire of length l and diameter d has potential difference V applied at its two ends. The drift velocity is V. If the diameter of wire is made d/4, then drift velocity becomes

a) V/16

b) 16V**c) V**

d) V/4

5. Consider a circuit with two unequal resistances in parallel, then

a) large current flows in large resistor**b) current is same in both**

c) potential difference across each is same

d) smaller resistance has smaller conductance

6. Which of the following bulbs will have high resistance?**a) 220V, 60W**

b) 220V,100W

c) 115V,60W

d) 115V,100 W

7. In a current-voltage relationship graph of a linear resistor, the slope of the graph will indicate

a) conductance

b) resistance

c) resistivity**d) a constant**

8. Conductance is expressed in terms of**a) mho**

b) mho/m

c) ohm/m

d) m/ohm

9. Resistivity of a wire depends on

a) length of wire

b) cross section area**c) material**

d) all of the mentioned

10. Ohm’s law is not applicable to**a) dc circuits**

b) high currents

c) small resistors

d) semi-conductors