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What is the current through a 10 ohm resistor connected across a 20V battery?

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Question: What is the current through a 10 ohm resistor connected across a 20V battery?

Options:

  1. 0.5 A
  2. 2 A
  3. 1 A
  4. 5 A

Correct Answer: 2 A

Solution: 

Using Ohm\'s law, I = V/R, we have I = 20V / 10 ohms = 2 A.

What is the current through a 10 ohm resistor connected across a 20V battery?

Practice Questions

Q1
What is the current through a 10 ohm resistor connected across a 20V battery?
  1. 0.5 A
  2. 2 A
  3. 1 A
  4. 5 A

Questions & Step-by-Step Solutions

What is the current through a 10 ohm resistor connected across a 20V battery?
Correct Answer: 2 A
  • Step 1: Identify the values given in the problem. We have a voltage (V) of 20 volts and a resistance (R) of 10 ohms.
  • Step 2: Recall Ohm's law, which states that current (I) is equal to voltage (V) divided by resistance (R). The formula is I = V / R.
  • Step 3: Substitute the values into the formula. Replace V with 20 volts and R with 10 ohms: I = 20V / 10 ohms.
  • Step 4: Perform the division. Calculate 20 divided by 10, which equals 2.
  • Step 5: State the result. The current (I) through the resistor is 2 amperes (A).
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