Physics · May / June 2019 · Paper 22 · Question 10
5054
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Fig. 10.1 is a diagram of a soldering iron. Solder is a mixture of metals used to make a permanent contact between electrical wires. heating element metal tip Fig. 10.1 The heating element raises the temperature of the metal tip. When solder is placed against the tip, the solder melts over the wires to be joined. When the solder cools, it solidifies and the permanent connection is made. The working temperature of the metal tip is 380 °C.
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10(a)[2]
10(b)(i)[2]
10(b)(ii)[3]
10(c)(i)[2]
10(c)(ii)[2]
10(d)(i)[2]
10(d)(ii)[2]
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