| 1 |
Current is equal to: |
IR<sup>2</sup>
CV
Q/t
IR
|
| 2 |
Specific resistance of copper is ____________ x 10-8Ohm-meter |
1.62
1.69
5.25
2.75
|
| 3 |
Specific resistance of silver = ________ x 10-sOhm-meter |
5.25
2.75
1.69
1.62
|
| 4 |
The resistance of voltmeter is: |
zero
low
Very high
10Ω
|
| 5 |
That period in which voltage repeats its value in equal intervals is called: |
cycle
Time period
Frequency
Amplitude
|
| 6 |
The current which changes its direction is called: |
Current
A.C.
Conventional current
D.C.
|
| 7 |
The current used in houses is: |
A.C.
Conventiona current
Current
D.C
|
| 8 |
The A.C. used in our houses has frequency _____ cycle/sec |
60
30
50
130
|
| 9 |
The unit of power is _________ |
Volt
Watt
Joule
Coulomb
|
| 10 |
Joule's law is W = ____________________ |
IR/t
IRt<sup>2</sup>
IR<sup>2</sup>t
I<sup>2</sup>Rt
|
| 11 |
How Galvanometer is connected in circuit to detect current? |
In Series
In Parallel
Fixed
Variable
|
| 12 |
Which instrument is used to detect current? |
Galvanometer
Voltmeter
Ammeter
Electroscope
|
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