Make sure you go through and revise the second lesson of Current Electricity, so that you do better in this test. As this test can be taken only once, and your score will be saved.
Make sure you have a scientific calculator with you before you start, for calculations.
This test will show, how well you are prepared for the exam. So don’t forget to revise before you start.
This mega test includes 30 Current electricity Questions.
Total time for this mega test is 30 minutes.
You have 1 minute for each question.
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What is the electromotive force (e.m.f.) of a cell?
E.m.f = E / Q.
The resistance of a component in a circuit is found using ammeter and a voltmeter.
How are the ammeter and voltmeter connected?
Ammeter will measure the current, while the voltmeter will measure the potential difference across the component.
Which produces an electromotive force (e.m.f.)?
E.m.f is referred to as Electromotive force which is the chemical energy (Source) converted to electrical energy per unit charge.
A student wishes to determine the resistance of a resistor. She uses an ammeter and a voltmeter in a circuit.
In which circuit are the ammeter and voltmeter connected correctly?
Ammeter is always connected in series, while voltmeter is always connected in parallel to the component.
Which row shows the meaning of the quantity e.m.f. and the unit in which it is measured?
A student investigates the resistance of a lamp.
Which row states how the meters must be connected?
Which row gives the unit for energy and the unit for electromotive force (e.m.f.)?
Newton (N) is the unit of force and Volt (V) is the unit of potential difference or e.m.f.
The circuit shown contains a battery, a 6.0 ohm’s resistor and two meters X and Y.
One meter records current and one meter records potential difference.
Which row shows possible values for the readings on the meter?
Use formula, R (resistance) = V / I.
A student measures the potential difference across a device and the current in the device.
Which calculation gives the resistance of the device?
R = V / I
Which electrical quantity is defined in terms of the energy supplied in driving charge round a complete circuit?
Which circuit could be used to determine the resistance of the resistor R?
R = Potential difference V / Current I.
A cell has an electromotive force (e.m.f.) of 1.5 V.
What does this statement mean?
You can easily calculate e.m.f for each option by using the formula, e.m.f = E / Q. The correct option will be where your calculated e.m.f is equal to the value of e.m.f given in question.
Which quantity is equivalent to 1.0V?
Electromotive force and potential difference have same units, that is Volt (V).
To find the correct answer, just see the unit. E.m.f or P.d = E / Q.