| 1. | The lamps in a house hold circuit are connected in parallel because ? | |
|
If one lamp fails the other also fail
|
||
|
This way they require less power
|
||
|
This way they required less current
|
||
|
If one lamp fails the others remain lit
|
||
View Answer
Discuss in Forum
Report Question| 2. | The device used for measuring potential difference is known as ? | |
|
Galvanometer
|
||
|
Voltmeter
|
||
|
Ammeter
|
||
|
Potentiometer
|
||
| 3. | The resistivity of a certain material is 0.6 ohm-m. The material is most likely to be ? | |
|
a semiconductor
|
||
|
a conductor
|
||
|
an insulator
|
||
|
a superconductor
|
||
| 4. | Which of the following is an ohmic resistor ? | |
|
Diode
|
||
|
Nichrome
|
||
|
Germanium
|
||
|
Diamond
|
||
| 5. | Two bulbs of 100 W and 40 W are connected in series. The current through the 100 W bulb is 1 A. The current through the ohm0 W bulb will be ? | |
|
1 A
|
||
|
0.4 A
|
||
|
0.8 A
|
||
|
0.6 A
|
||
| 6. | Two resistors are connected in series gives an equivalent resistance of 10 ohm. When connected in parallel, gives 2.4 ohm. Then the individual resistance are ? | |
|
8 ohm and 2 ohm
|
||
|
7 ohm and 4 ohm
|
||
|
6 ohm and 4 ohm
|
||
|
each of 5 ohm
|
||
| 7. | Which of the following represents voltage ? | |
|
Work done x Charge x Time
|
||
|
Work done/ Current x Time
|
||
|
Work done x Time/Current
|
||
|
Work done x Charge
|
||
| 8. | A Current of 1 a is drawn by a filament of an electric bulb. number of electrons passing through a cross section of the filament in 16 seconds would be roughly ? | |
|
10 to the power 23
|
||
|
10 to the power 18
|
||
|
10 to the power 16
|
||
|
10 to the power 20
|
||
| 9. | An electric fuse works on the ? | |
|
Lighting effect of current
|
||
|
Heating effect of current
|
||
|
Magnetic effect of current
|
||
|
Chemical effect of current
|
||
| 10. | The potential at a point is 20V. The work done to bring a charge of 0.5 C from infinity to this point will be ? | |
|
40J
|
||
|
10J
|
||
|
5J
|
||
|
20J
|
||