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20 questions
A straight line symbol shows the
Fuse
Diode
Connecting wire
Switch
Rate of flow of electric charge is
Electric current
Conventional current only
Electronic current only
Potential difference
Instrument which transfers energy to electric charge in a circuit is
Battery
Voltmeter
Ammeter
Galvanometer
If a current of 1A passes through a point in 1s then the charge passes that point is
2C
3C
1C
6C
Energy transfer per unit charge is
E.M.F
Current
Potential difference
Conventional current
Current in a circuit when a charge of 180C passes a point in a circuit in 2 minutes.
1.00 AM
2.00 A
3.00 A
1.5 A
Identify the conductor below
Cloth rag
Gold ring
Plastic bottle
Rubber eraser
Identify the insulator below
Aluminium foil
Rubber eraser
Paper clip
Gold ring
Current in a circuit depends on
Resistance
Potential difference
Both A and B
E.M.F
If the direction of current is from positive to negative, then it is called
Electronic current
Convectional current only
Positronic current
Protonic current
A voltmeter arranged across the power supply measures
Potential difference
E.M.F
Current
Resistance
EMF is an abbreviation of
Electromotive force
Electric motive force
Electrical motive force
Both a and b
Electromotive force of a battery can be defined with the formula of
E = IR
E = IR + I
E = IR + r
E = IR + Ir
Potential difference of a battery is 2.2 V when it is connected across a resistance of 5 ohms, if suddenly the potential difference falls the 1.8 V, its internal resistance will be
1 ohms
1.1 ohms
2.0 ohms
2.1 ohms
Thicker wire have ..........resistance than thinner wire.
more
less
the same
As the resistance in the circuit increases, the electric current
increases
decreases
stay the same
Good conductor are...... resistor
bad
good
Good insulator are ....... resistor.
bad
good
What characteristic impact resistance of material.
Thickness
Temperature
Length
All of the above
If the current increases, it could be because of...
Increase voltage
Decreasing resistance
Both
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