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Question 6

An ultra-low-power biomedical sensor is placed in a deep-sleep state where it draws a constant leakage current of 85 μA85\ \mu\text{A}85 μA. The sensor remains in this state for exactly 4.0 hours4.0\text{ hours}4.0 hours.

What is the total charge that flows through the sensor during this period?

A

0.020 C0.020\text{ C}0.020 C

B

1.2 C1.2\text{ C}1.2 C

C

1200 C1200\text{ C}1200 C

D

3.4×10−4 C3.4 \times 10^{-4}\text{ C}3.4×10−4 C

Markscheme

Simple circuits Questions

  1. GCSE
  2. /Physics
  3. /Simple circuits

42 exam-style questions on OCR GCSE Physics Simple circuits. Each one has a worked solution and a mark scheme showing where the marks go.

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