What is the current in a 20 kΩ lamp if the voltage at the ends of this conductor is 200 V?
| September 19, 2021 | education
To find the value of the current in the specified lamp, apply Ohm’s law: I = U / R.
Values of variables: U – voltage across the specified lamp (U = 200 V); R is the resistance of the lamp (R = 20 kOhm = 2 * 104 Ohm).
Calculation: I = U / R = 200 / (2 * 104) = 0.01 A (10 mA).
Answer: The current in the indicated lamp is 10 mA.
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