Electricity | Baamboozle - Baamboozle | The Most Fun Classroom Games!

If resistance increases while voltage stays the same, what happens to current?

The current decreases.

Write the equation for Ohm’s Law.

V=I×R

What is the actual direction of electron flow in a circuit?

From negative to positive.

If 20 C of charge passes in 10 s, what is the current?

2A

What is the equation for electric current?

I= Q/t , where I:current, Q: charge and t:time

What is an ammeter used for?

To measure electric current.

What causes an electric current in a circuit?

The flow of electric charge.

What particles move to conduct electricity in metals?

electron

If the current is 3A, the voltage is 4V, and the time is 2 hours, what is the electrical energy used?

Convert time to seconds: 2 hours = 7200 seconds 2hours=7200seconds 𝐸 = 3 × 4 × 7200 = 86400J

What is the equation for electrical energy?

𝐸 = 𝐼 × 𝑉 × 𝑡

If the current is 2A and the voltage is 5V, what is the electrical power?

P=2×5=10W

What is the equation for electrical power?

P=I×V

How does the resistance of a metallic wire change when its cross-sectional area is increased?

The resistance decreases as the cross-sectional area increases.

How does the resistance of a metallic wire change when its length is increased?

The resistance increases as the length of the wire increases.

What calculations are needed to find the resistance?

Measure the voltage (V) across the component and the current (I) through it, then use the equation R= I / V .

What instruments would you use to measure the resistance in a circuit?

A voltmeter and an ammeter.

what is the unit for resistance?

Ohm (Ω)

If the voltage is 12V and the current is 3A, what is the resistance?

4Ω

What is the equation for resistance?

R = V / I

What is the equation to calculate potential difference (p.d.)?

the equation for potential difference (p.d.) is V= E/Q , where V the potential difference, E is the energy transferred , and Q is the charge.

If the work done is 20 Joules and the charge is 5 Coulombs, what is the e.m.f.?

4V

What is the equation used to calculate electromotive force (e.m.f.)?

The equation for e.m.f. is E= Q / W , where E is the e.m.f., W is the work done, and Q is the charge.

What is the difference between analogue and digital voltmeters?

Analogue voltmeters show measurements using a needle on a scale, while digital voltmeters display the measurement numerically.

What is equipment use to measure potential difference?

Voltmeter

What does potential difference (p.d.) mean?

Potential difference (p.d.) is the work done by a unit charge passing through a component.

what is the unit of e.m.f. measured?

e.m.f. is measured in volts (V).

What is mean by electromotive force (e.m.f.)?

Electromotive force (e.m.f.) is the electrical work done by a source in moving a unit charge around a complete circuit.