Question Bank

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?

Electric field intensity at a point is defined as:

Two resistors R1 and R2 are in parallel. If R1 > R2, then the power dissipated P1 and P2 will be such that:

Which of the following produces a DC current?

A current-carrying conductor is placed in a magnetic field. The force is maximum when the angle between them is:

The unit of magnetic flux is:

What is the equivalent resistance of a wire of 12 Ohms bent into a circle, measured across its diameter?

The total resistance of 'n' identical resistors in series is S. When they are connected in parallel, the total resistance is P. The ratio S/P is:

What is the nature of sound waves in air?

Which of the following media allows sound to travel fastest?

What is the audible frequency range for a healthy human ear?

What is the phenomenon of repetition of sound due to reflection from a distant object called?

Which characteristic of sound depends on its frequency?

What is the unit used to measure the intensity level of sound?

Sound waves cannot travel through which of the following?

What is the relationship between the velocity (v), frequency (f), and wavelength (λ) of a sound wave?