A spot-welder is a device that uses a transformer to produce a large current to join sheets of metal together. Figure 2 shows a transformer demonstrating how a large current can heat and join two nails together Calculate the current from the power supply needed to provide a power output of 336 W. Use the data in Figure 2. The transformer is 100% efficient. – 6079

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Q1

A spot-welder is a device that uses a transformer to produce a large current to join sheets of metal together. 

Figure 2 shows a transformer demonstrating how a large current can heat and join two nails together

(d) Calculate the current from the power supply needed to provide a power output of 336 W. 

Use the data in Figure 2. 

The transformer is 100% efficient.

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Current = _____________________ A (5)