30
Minutes
58
Questions
1 / -0
Marking
Q1. Which of the given is the SI Unit of Electric Current?
Ohm
Ampere
Volt
Faraday
Q2. What is the amount of current flowing through an electric press, if the amount of charge passing through a conductor in 10 minutes is 300 C?
30 A
0.3 A
0.5 A
5 A
Q3. When electric current is passed, electrons move from:
high potential to low potential.
low potential to high potential.
in the direction of the current.
against the direction of the current.
Q4. A wire of length /, made of material resistivity ρ is cut into two equal parts. The resistivity of the two parts are equal to,
ρ
P/2
2 ρ
4 ρ
Q5. The hindrance presented by material of conductor to the smooth passing of electric current is known as:
Resistance
Conductance
Inductance
None of these
Q6. An electrical appliance has a resistance of 25 Ω. When this electrical appliance is connected to a 230 V supply line, the current passing through it will be:
0.92 A
2.9 A
9.2 A
92 A
Q7. The heating element of an electric iron is made up of:
copper
nichrome
aluminium
iron
Q8. A fuse wire is inserted in which wire?
Live wire
In the neutral wire
In the earth wire
May be connected in any line
Q9. When a 4 Ω resistor is connected across the terminals of a 2 V battery, the number of coulombs passing through the resistor per second is:
0.5
1
2
4
Q10. The electrical resistance of insulators is
high
low
zero
infinitely high
Q11. A battery of 10 volt carries 20,000 C of charge through a resistance of 20 Ω. The work done in 10 seconds is
2 × 10³ joule
2 × 10⁵ joule
2 × 10⁴ joule
2 × 10² joule
Q12. The rate of flow of an electric charge is known as :
Electric potential
Electric conductance
Electric current
None of these
Q13. Keeping the potential difference constant, the resistance of the circuit is halved. The current will become:
One-fourth
Four times
Half
Double
Q14. Electrical resistivity of any given metallic wire depends upon
its thickness
its shape
nature of the material
its length
Q15. A boy records that 4000 joule of work is required to transfer 10 coulomb of charge between two points of a resistor of 50 Ω. The current passing through it is
2 A
4 A
8 A
16 A
...and 43 more challenging questions available in the interactive simulator.