4 marksMagnetic Forces
CAPE Physics Unit 2 · 2006 · Paper 2 · Question 5(b)(i)
A current balance consists of a 10\text{ cm} section of wire on an electronic balance and a parallel wire directly above it at a separation of 2.5\text{ cm}. When switched on, the reading increases by 5.0 \times 10^{-6}\text{ N}.
Calculate the current through the wire.
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