A resistor has a resistance of 200 ohms. If a current of 0.5 amperes flows through it, what is the voltage drop across the resistor?
Correct answer: A. 100 volts
- A. 100 volts
- B. 110 volts
- C. 120 volts
- D. 0.002 volts
Explanation
The voltage drop across the resistor can be calculated using Ohm's Law:V = I × Rwhere:V = voltage drop (in volts)I = current (in amperes)R = resistance (in ohms)Given values:I = 0.5 AR = 200 ΩSubstituting the values, we get:V = 0.5 A × 200 Ω= 100 V
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Current Electricity
Steady current relates charge flow to potential difference, resistance and resistivity, including how temperature changes a conductor's resistance. Sources with internal resistance have terminal voltage below their emf when delivering current, and maximum power output occurs under a specific load condition rather than at zero resistance.
Practise Current Electricity
1,052 free Current Electricity MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Current Electricity questions
Of the following, the copper conductor that has the least resistance must be:
A wire of length l has resistivity 𝛒. If the wire Is divided in two halves, then resistivity of each halve is:
For 0.5 Siemens of conductance, resistance will be:
Ohm's law states that the current is directly proportional to _ and inversely proportional to _
The device used to adjust voltage levels in an electrical circuit is called
The instantaneous power supplied to a circuit is a product of the _ and _.