Physics

A step-up transformer increases the:

The magnetic effect of electric current was first discovered by:

An electric generator works on the principle of:

One kilowatt-hour (1 kWh) is equal to how many Joules?

If two 10 Ohm resistors are connected in series, the total resistance is:

A volt-meter is always connected in ________ with the component to measure potential difference.

The core of an electromagnet is typically made of:

What happens to the resistance of a wire if its length is doubled?

The primary purpose of earthing an electrical appliance is to:

What type of current is obtained from a dry cell battery?

The rate of flow of electric charge is called:

The property of a material to oppose the flow of current is:

A resistor has a resistance of 5 Ohms. If a potential difference of 10 Volts is applied across it, what is the current?

Which rule is used to find the direction of magnetic field around a straight current carrying conductor?

Which of the following is an example of a secondary cell?

Calculate the equivalent resistance of two 4 Ohm resistors connected in parallel.

A 100 Watt bulb is used for 10 hours daily. How many 'units' of electricity does it consume in one day?

A transformer has 200 turns in the primary coil and 1000 turns in the secondary coil. If the primary voltage is 220V, what is the secondary voltage?

What is the resistance of an electric toaster rated 1000W at 250V?

If three resistors of 2 Ohms, 3 Ohms, and 5 Ohms are connected in series, what is the current through the 3 Ohm resistor when connected to a 20V battery?