Physics
Practice Physics MCQs from the Science syllabus.
Which law states that the induced current always opposes the cause that produces it?
Resistance of a wire of length L and area A is R. If another wire of same material has length 2L and area 2A, its resistance will be:
Which of the following does NOT affect the strength of an electromagnet?
A wire has resistance 10 Ohms. If it is cut into two equal halves and connected in parallel, the new resistance is:
What is the equivalent resistance between A and B in the provided circuit diagram?
In an AC circuit, the ratio of peak voltage to RMS voltage is:
A current of 0.5 A is drawn by a filament of an electric bulb for 10 minutes. The amount of electric charge that flows through the circuit is:
Which of the following correctly relates Power (P), Voltage (V) and Resistance (R)?
The resistivity of a certain material is 0.1 Ohm-meter. What is its conductivity?
How much work is done in moving a charge of 2 Coulombs across two points having a potential difference of 12 Volts?
Three resistors of 1, 2, and 3 Ohms are connected in series. The potential difference across the 2 Ohm resistor if the total voltage is 12V is:
What is the direction of the magnetic field inside a bar magnet?
Two resistors R1 and R2 are in parallel. If R1 > R2, then the power dissipated P1 and P2 will be such that:
A current-carrying conductor is placed in a magnetic field. The force is maximum when the angle between them is: