P5 Flashcards

What is an atom made up of?

What is the name given to the force between charged objects. Give an example of this.

Explain why rubbing two objects together can make them charged.

Why are metals good electrical conductors?

Why are plastics better electrical insulators than conductors?

What is the flow of charge in a circuit also known as?

When a bulb is lite, there is an electric current. What is the role of the moving electrons in the circuit?

What is the electric current also known as?

The __ energy the charged particles receive from the power supply, the ____ the current.

What is an ammeter?

What is a voltmeter?

If there is a large voltage of a battery in a circuit, the bigger the ___?

What is the formula used to find the Power?

What is the potential difference?

What lowers a current in a circuit?

What is resistance a measure of?

Which specific type of wire has very low resistance?

What is a variable resistor?

What is the formula used to find resistance?

If components connected in a series are in a line, is the current the same through all the components, or different for each one?

Explain why resistors get hotter when an electric current is flowing through them.

What is a thermistor?

What is a light dependent resistor?

Why does resistance increase with increasing temperature?

Is more work done by a charge with a higher or lower resistance?

What is a magnetic field?

When is the magnetic field at its strongest?

How is a voltage induced?

How can you increase the voltage induced?

When is a continuous supply of electricity produced?

What is electromagnetic induction?

As a coil rotates, it cuts the lines of magnetic fields at different rates. What are these different rates?

What is a direct current?

What is an alternating current?

Why is the U.K's mains electricity an alternating current?

Why is it more efficient to transmit electricity at high voltages?

What are transformers?

What are motors?

What is an electromagnet?

Explain the motor effect.

When is this force at its largest?

Explain how a transformer works.

In a step up transformer, will there be less turns in the secondary coil or the primary coil?