| 1 |
The potential of the neutral wire is. |
Zero
+220 volts
220 volts
Changing
|
| 2 |
The instrument that measures current is called. |
Voltmeter
Circuit breaker
Ammeter
Switch
|
| 3 |
A device which does not allow current to pass through it overt a certain limit: |
Switch
circuit breaker
Resistor
Fuse
|
| 4 |
Multi - meter is an instrument which can be used to measure: |
Resistance
Current
Potential difference
all of the above
|
| 5 |
Which circuits carry currents to the lights heaters and other appliances: |
parallel circuits
series circuits
common circuits
All of the above
|
| 6 |
A,C electric supply at homes: |
240 volt
50 volt
220 volt
1000 volt
|
| 7 |
The working principle of transformer: |
Electromagnetic conduction
Electrostatic induction
Electric charge
Neutralization
|
| 8 |
A device that decreases or increases the A.C voltage: |
Transformer
Ammeter
Voltmeter
Fuse
|
| 9 |
The SI unit of capacitance is: |
Farad
Ampere
Ohm
Newton
|
| 10 |
The device use to store electric current: |
Fuse
Switch
Resistor
Capacitor
|
| 11 |
The conductors having larges resistance are called: |
Fuses
Switches
Resistors
Capacitors
|
| 12 |
The SI unit of resistance: |
Volt
Ampere
Ohm (Ω)
Farad
|
| 13 |
According to ohm's law , current and potential difference are: |
Inversely proportional
Directly proportional
Equal
Non of the above
|
| 14 |
The potential difference between tow paints in a circuit is measured by: |
Galvanometer
Ammeter
Voltmeter
Multi - meter
|
| 15 |
Which of the following is an neutral particle? |
Electron
Proton
Neutron
Alpha particle
|
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