Current Electricity Physics Test 01

Total Questions: 23

1 - An electric current in conductors is due to the flow of

A ) positive ions
B ) negative ions
C ) positive charge
D ) free electrons ✅

4 - Why should household appliances be connected in parallel with the voltage source?

A ) to increase the resistance of the circuit
B ) to decrease the resistance of the circuit
C ) to provide each application the same voltage as the power source ✅
D ) to provide each application the same

5 - Electric potential and e.m.f

A ) are the same terms
B ) are the different terms ✅
C ) have different units
D ) both b and c

6 - When we double the voltage in a simple electric circuit, we double the

A ) Current ✅
B ) Power
C ) resistance
D ) both (a) and (b)

10 - The ampere is a unit of :

A ) energy
B ) Potential difference
C ) electric potential
D ) electric current ✅

11 - The rat of flow of charge through any cross- sectional area is called:

A ) Potential difference
B ) energy
C ) charge
D ) electric current ✅

12 - Battery converts chemical energy into which energy:

A ) Mechanical
B ) Electrical ✅
C ) Thermal
D ) Sound

13 - The resistance of conductor is due to:

A ) Protons
B ) Fixed atoms ✅
C ) Molecules
D ) Neutrons

14 - The unit of potential difference is:

A ) volt ✅
B ) Coulomb
C ) ampere
D ) Joule

15 - Mathematical from of ohm's Law is:

A ) P = IV
B ) V = IR ✅
C ) Q = IT
D ) W = Q/V

16 - What type of graph is in between V and I, if metal obeys ohm's law?

A ) Curved
B ) Parabola
C ) Straight line ✅
D ) Linear

17 - The unit of (q) in formula R =pI/ A is:

A ) Ω
B ) Ω-m ✅
C ) Ω-m²
D ) Ω-m-²

18 - SI unit of resistance is:

A ) Volt
B ) Ampere
C ) Ohm ✅
D ) Joule

20 - To measure the value of current flowing in a circuit which device is used:

A ) Galvanometer
B ) Ammeter ✅
C ) Voltmeter
D ) None of these

21 - How Galvanometer is connected in circuit to detect current?

A ) In Series ✅
B ) In Parallel
C ) Fixed
D ) Variable

22 - Joule's law is W=

A ) IR / t
B ) IRt²
C ) IR²t
D ) I²Rt ✅

23 - The unit of electric power is:

A ) volt
B ) watt ✅
C ) joule
D ) coulomb