Which circuit will have the greatest electric current?
(1 point)
circuit 1
circuit 4
circuit 2
circuit 3
Circuit A has a resistance of 7.5 ohms, and circuit B has a resistance of 5 ohms. Which statement about the circuits must be correct?(1 point)
If the current in circuit A is less than the current in circuit B, then the voltage in circuit A is less than the voltage in circuit B.
If the voltage of circuit A is equal to the voltage of circuit B, then the current in circuit A is less than the current in circuit B.
If the current in circuit A is equal to the current in circuit B, then the voltage in circuit A is less than the voltage in circuit B.
If the voltage of circuit A is equal to the voltage of circuit B, then the current in circuit A is equal to the current in circuit B.
Which statement best defines the resistance of an electric circuit?(1 point)
It is the measurement of the rate of electrical energy in a circuit.
It describes how much electrical energy passes in a circuit.
It limits the amount of electrical energy that can pass through a circuit.
It is the amount of electrical energy that is available in a circuit
An electric circuit has an expected current of 80 amps. An electrician measures the current in the circuit at 120 amps. Which statement provides a possible explanation for this observation?(1 point)
There is not enough electrical energy in the circuit.
A resistor in the circuit is broken.
There is not enough voltage in the circuit.
The circuit has an extra resistor.
circuit 2
If the current in circuit A is less than the current in circuit B, then the voltage in circuit A is less than the voltage in circuit B.
It limits the amount of electrical energy that can pass through a circuit.
A resistor in the circuit is broken.
To determine which circuit will have the greatest electric current, we need more information. Electric current is determined by the voltage and resistance in the circuit. If the voltage is the same in all circuits, then the circuit with the lowest resistance will have the greatest current, as described by Ohm's law (I = V/R). So, to compare the circuits, you would need to know the resistance values for each circuit.
For the statement about circuits A and B, we can use Ohm's law again. If the resistance values are known, and assume the voltage is the same, the circuit with the lower resistance will have a greater current. So, if the current in circuit A is less than in circuit B, it means the resistance in circuit A is higher than in circuit B.
The resistance of an electric circuit is a measure of how much it opposes the flow of electric current. It is not a measurement of the rate or amount of electrical energy. So, the correct statement is "It limits the amount of electrical energy that can pass through a circuit."
For the observation of measuring a current of 120 amps in a circuit that was expected to have 80 amps, there could be several possible explanations. If the circuit does not have enough voltage, it may not be able to provide enough energy for the expected current. Another possibility is that there is an extra resistor in the circuit, causing an increase in resistance and therefore an increase in current. Lastly, a broken resistor may decrease the overall resistance in the circuit, leading to an increase in current.
The circuit with the greatest electric current is circuit 4.
For circuits A and B, if the current in circuit A is less than the current in circuit B, then the voltage in circuit A is less than the voltage in circuit B.
The resistance of an electric circuit is the measurement that limits the amount of electrical energy that can pass through a circuit.
A possible explanation for measuring the current in the circuit at 120 amps instead of the expected 80 amps could be that there is a resistor in the circuit that is broken.