Explanation

Joule is a unit of work or energy or heat.

Joule is a scalar quantity.

Explanation

Two angles are called supplementary when their measures add up to 180 degrees.

Two angles are called complementary when their measures add up to 90 degrees.

Explanation

A residual-current device (RCD) is widely used in electrical circuits for shock safety.

It detects leakage currents and disconnects the circuit to prevent electric shocks.

Explanation

A transistor is a semiconductor component that can be used either as a switch or an amplifier.

It controls the flow of electrical current in a circuit and is fundamental in electronic devices.

Explanation

The process by which free electrons are emitted from the metal surface by the application of light is called photoelectric emission.

Explanation

Pressure exerted by the material on a smooth surface is not a factor affecting the resistance of a material.

The resistance is influenced by the type of material, temperature, and cross-sectional area.

Explanation

The unit of measurement for inductance is the henry (H).

It is the International System of Units (SI) unit.

The henry is named after Joseph Henry, the physicist who independently discovered inductance.

Explanation

The word geometry means measurement of the earth.

Euclid is known as Father of Geometry.

Euclid was a mathematician from Greece. 

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agm.5.3.23

Explanation

Materials that block the flow of electrons are called insulators.

They have high resistance and prevent electrical current from flowing through them.

Such as rubber or glass.

Explanation

Photo resistors  are light sensitive variable resistors 

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