An aluminium bar of square cross-section contains a square iron insert as shown. The resistivities of Al and Fe are 2.7×10⁻⁸ Ωm and 1.0×10⁻⁷ Ωm respectively. Find the electrical resistance between faces P and Q.
Physics · Current electricity · Electric Current, Drift Velocity & Resistance
An aluminium bar of square cross-section contains a square iron insert as shown. The resistivities of Al and Fe are 2.7×10⁻⁸ Ωm and 1.0×10⁻⁷ Ωm respectively. Find the electrical resistance between faces P and Q.
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