Circuit Exercise-5: Solution

Assume that we know the resistance of a given part of a circuit and the applied voltage.
Question: Calcualte the current drawn in the circuit.
As per the figure and assuming there is an uncoated metal clamp to hold the wires in place in the battery-and-bulb circuit.
Question: Will this help to keep the bulb burning brightly?

Pick an answer:
  1. Yes
  2. No
  3. Possible
  4. The drawing is not clear enough to decide
Answer:
No. The metal clamp creates a conducting path across the battery causing it to discharge.
On the oher hand, if the clamp is needed then it is recommended to put an insulating tape between one of its jaws and the electrical connection.


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Date of last modification: 2022