What property should be increased to decrease motor speed in a circuit and how? 4) Give 3 daily life examples of measuring voltage and current.

Here are the solutions to the questions:

3) Given here, is a circuit prepared by a student to rotate a cardboard disc using an electric motor. To decrease the rotational speed of this motor;

1. What property of the circuit should be increased? The resistance of the circuit should be increased.

2. Suggest a method to do it. A variable resistor (rheostat) can be connected in series with the motor, and its resistance can be increased. Alternatively, a fixed resistor with a suitable value can be added in series.

4) List out three instances in day-to-day life where measuring voltage and current is important.

1. Checking the charge level and health of batteries in devices like mobile phones, laptops, or cars.
2. Troubleshooting electrical faults in home appliances or wiring to identify issues like short circuits or open circuits.
3. Ensuring the safe operation of electrical systems by verifying that circuits are not overloaded and that appliances receive the correct voltage and current.