What is the current flowing through an electric circuit if it has 120 volts across it and 10 ohms of resistance?
Table of Contents
What is the current flowing through an electric circuit if it has 120 volts across it and 10 ohms of resistance?
12 amps
Using Ohm’s Law to Calculate Current Q: If a 120-volt voltage source is connected to a wire with 10 ohms of resistance, how much current is flowing through the wire? A: Substitute these values into the equation for current: Current = 120 v o l t s 10 o h m s = 12 amps.
What is the voltage across a 2 ohm resistor if a current flowing through is 0.5 amps?
1 volt
Calculate Voltage Let’s solve for voltage in a circuit with a 2-ohm resistor with a current of 0.5 amperes flowing through it. First, plug in our values: Voltage = . 5 amperes x 2 ohms. Voltage equals 1 volt.
What happens to the current in a circuit if a 10 Ω resistor is removed and replaced by a 20ω resistor?
12. What happens to the current in a circuit if a 10Ω resistor is removed and replaced by a 20Ω resistor? I = 10Ω → 20Ω For the same voltage, current decreases.
What is the resistance of a toaster that uses 5 a of current when connected to a 120 V power source?
Physics 4-26
| Question | Answer |
|---|---|
| What is the resistance of a toaster that uses 5 A of current when connected to a 120 V power source? | 24 ohms |
| When connected to a 110 V power supply, how much current is in a light bulb that has a resistance of 220 ohms? | 0.5 A |
How do you calculate current through a resistor?
Current through each resistor can be found using Ohm’s law I=V/R, where the voltage is constant across each resistor.
How do you calculate current using ohm’s law?
Ohms Law and Power
- To find the Voltage, ( V ) [ V = I x R ] V (volts) = I (amps) x R (Ω)
- To find the Current, ( I ) [ I = V ÷ R ] I (amps) = V (volts) ÷ R (Ω)
- To find the Resistance, ( R ) [ R = V ÷ I ] R (Ω) = V (volts) ÷ I (amps)
- To find the Power (P) [ P = V x I ] P (watts) = V (volts) x I (amps)
What happens to the current in a circuit if a 1.5 volt battery is removed and is replaced by a 9 volt battery?
9. What happens to the current in a circuit if a 1.5- volt battery is removed and replaced by a 9-volt battery? The current would increase.
What is the resistance of a toaster if 120v?
about 26 Ohms
So, the toaster has a resistance of 120 Volts divided by 4.6 Amps which is about 26 Ohms.
What is the current through an 8.0 Ω toaster when it is operating on 120 V?
The current through a toaster connected to a 120-V source is 8.0 A. What power is dissipated by the toaster? P= V1 = (120 V)(8.0 A) = 9.6 X 102W 22.
How do you find current from voltage?
The explanations here are that; Current equals Power divided by Voltage (I=P/V), Power equals Current times Voltage (P=VxI), and Voltage equals Power divided by Current (V=P/I).
How do you calculate current draw?
Divide the watts of a given electrical item by the total number of volts available from the electric outlet to calculate amperage draw. The amount of current flowing through the wire is measured in amperes, or amps. The equivalent of available electricity at the power source is voltage, or volts.
When the 1.5 volts battery is replaced with a 3 volts battery What will happen?
16 Cards in this Set
| In a simple series circuit, why does the bulb light when you close the switch? | Because closing the switch completes the circuit. |
|---|---|
| Imagine a simple series circuit with one 1.5V battery and one bulb. When the 1.5V battery is replaced with a 3V battery, what happens to the bulb? | The bulb glows brighter. |
What would occur to the current I of a circuit if the resistance of the circuit suddenly doubled?
On the other hand, any alteration in the resistance will result in the opposite or inverse alteration of the current. So doubling or tripling the resistance will cause the current to be one-half or one-third the original value.
