Current Electri...

Find the equivalent resistance of the circuit.

The direction of the electric field intensity at a point due to an infinitely long straight uniformly positive charged wire is:

Which of the following obeys inverse square law?

'VA' is the unit of which one?

Consider the following statements:

1. The shorter length of the potentiometer wire is preferred.
2. Copper wire is used in potentiometers.
3. The electric field inside the potentiometer is variable.
4. If the length of the wire is halved, the position of zero deflection in a potentiometer occurs at a longer length.

Which of the following statement is incorrect?

The charge on the metallic sphere of radius R is Q. The electric field intensity at a distance r from the centre of the sphere is E. If the charge on the sphere is doubled, the electric field intensity at a distance 2r will be: (R < r)

In the circuit given, the correct relation to a balanced Wheatstone bridge is:

Which of the following force does not follow the inverse square law?

When one joule of energy is consumed in one second, then the power used is said to be?

Two resistances of 10 Ω and 30 Ω are parallel connected in a circuit. The equivalent resistance of the circuit will be:

The meter bridge is used to:

If two unequal resistors connected in parallel then:

If two bulbs, one of 200 W and the other of 100 W are connected in series with a 100 V battery, then which bulb will have more brightness:

An iron ball is having radius \(0.04\) m. A charge of \(1.6 \times 10^{-7}\) C is uniformly distributed over its surface. What is the electric field at a point \(0.2\) m from the centre of it?

Which of the following options is correctly depicting the formula of power?

The heat generated while transferring 96000 coulomb of charge in one hour through a potential difference of 50 V is:

The process of electroplating, using the phenomenon of electrolysis, is primarily based on:

Potential gradient is defined as:

An equilateral triangle is made of three wires of equal resistances 4 Ω. Find the equivalent resistance across any one side.

Keeping voltage constant, if more lamps are put into a series circuit, the overall current in the circuit:

A conductor follows Ohm's law under specific conditions of voltage applied and current. What is the increase in current for every 2V increase in potential applied?

The relation between the electric field intensity E and the linear charge density λ for an infinitely long straight uniformly charged wire is:

On giving 220 V to a resistor the power dissipated is 40 watt, then the value of resistance is:

The electric field intensity due to an infinitely long straight uniformly charged wire is directly proportional to the distance r as:

\(1 kWh =\) ______ \(J\)

Heating effect produced by current is due to the ________.

Consider two parallel infinite line charges \(+\lambda\) and \(-\lambda\) separated by a distance \(R\) in free space. What will be the electric field intensity exactly at the middle of the twoline charges?

A 220 V, 100 W bulb is connected to a 110 V source. Calculate the power consumed by the bulb.

A wire of resistance 'R' is cut into 'n' equal parts. These parts are then connected into parallel. The equivalent resistance value will be ______.

An electron is placed in an electric field of intensity \(10^{4}\) Newton per Coulomb. The electric force working on the electron is: