Electricity and Resistance Quiz Mr. Wright 5th

What unit do we use to measure resistance?

• Volts

• Amps

• Ohms

• Watts

If a resistor has a resistance of 50 Ohms and a current of 2 Amps passes through it, what is the voltage across the resistor?

• 25 V

• 100 V

• 50 V

• 100 Ohms

What is the symbol for the unit of resistance?

• Ω (Ohm)

• A (Amp)

• V (Volt)

• W (Watt)

Which law states that the current through a conductor between two points is directly proportional to the voltage across the two points?

• Newton's Law

• Tesla's Law

• Ohm's Law

• Einstein's Law

What will happen to the resistance of the graphite rod if we cut it in half?

• It will be reduced by half

• It will double

• It will remain the same

• It will decrease, but we cannot know how much

What happens with voltage and current in the different resistors of a circuit with resistors connected in series?

• Current (I) is the same but voltage (V) is split among all resistors connected in series

• Voltage (V) is the same but current (I) is split among all resistors connected in series

• Voltage (V) and current (I) are the same

• Voltage (V) and current (I) are split among all resistors connected in series

According to Ohm's Law, will current split equally between Resistor 1 and Resistor 2?

• No, because their resistance is different

• Yes, because they are connected in parallel

• No, because one is closer to the battery

• Yes, because there are only two ways for the electricity

What would be the equivalent resistor for Resistor 1 and Resistor 2? (Resistor 1 has a resistance of 20 Ohms, and Resistor 2 has a resistance of 70 Ohms).

• 90 Ohms

• 50 Ohms

• 70 Ohms

• 20 Ohms

According to the law of conservation of energy, if the battery provides 9 Volts and 2 Volts are used in one of the resistors, how many volts will be used in the other resistor?

• 7 V

• 11 V

• 2 V

• 5 V

If a circuit has two resistors in parallel, how does the total resistance compare to the resistance of each individual resistor?

• Total resistance is equal to the sum of the individual resistances

• Total resistance is always less than the resistance of the smallest individual resistor

• Total resistance is always greater than the resistance of the largest individual resistor

• Total resistance is equal to the resistance of the largest individual resistor