# WHAT IS JOULES HEATING?
WHAT IS SPILT RINGS?

### Asked by Suyash Sinha | 17th Sep, 2014, 06:22: PM

###
**JOULES HEATING:**

When an electric current flows through a high resistance wire like nichrome wire, the resistance wire becomes very hot and produces heat. This is actually the heating effect of current . The heat produced when a current I flows through a wire of resistance R ohms for time t seconds is given by the Joules law of heating.

According to Joules law of heating the heat produced in a wire is directly proportional to:

1. square of current (I^{2})

2. resistance of wire (R)

3. time(t) for which the current flows

i.e. Heat produced, H = I^{2}RT

**SPLIT RINGS**

Split rings are used in electric motors.An electric motor is a device which converts the electrical energy into mechanical energy.

A Split ring (or commutator) is a device which reverses the direction of current through a circuit. In an electric motor the split ring commutator reverses the direction of current flowing through the coil after every half rotation of the coil.

**JOULES HEATING:**

When an electric current flows through a high resistance wire like nichrome wire, the resistance wire becomes very hot and produces heat. This is actually the heating effect of current . The heat produced when a current I flows through a wire of resistance R ohms for time t seconds is given by the Joules law of heating.

According to Joules law of heating the heat produced in a wire is directly proportional to:

1. square of current (I^{2})

2. resistance of wire (R)

3. time(t) for which the current flows

i.e. Heat produced, H = I^{2}RT

**SPLIT RINGS**

Split rings are used in electric motors.An electric motor is a device which converts the electrical energy into mechanical energy.

A Split ring (or commutator) is a device which reverses the direction of current through a circuit. In an electric motor the split ring commutator reverses the direction of current flowing through the coil after every half rotation of the coil.

### Answered by Jyothi Nair | 18th Sep, 2014, 09:20: AM

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