The engineering and catering courses will require much greater use of expensive machinery and equipment, which in
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Question:
1. State the dimensional formula of electromotive force.
2. Explain why internal resistance does not depend on temperature of the electrolyte.
3. State whether the emf of a cell relies on the concentration of the electrolyte
4. Discuss the effect on potential difference and emf of a cell when it's discharged
5. Calculate resistance of the resistor given that it is connected to a cell with emf 6V, internal resistance of 1 ohms and current of 0.5A
6. State the most accurate device for measuring electromotive force.
7. Explain what happens when a cell is connected wrongly in a series circuit
8. Find out the number of cells with emf of 2V and internal resistance 1V joined to a series of 30 ohms resistance. The current through it is 0.8A
9. Explain why in parallel grouping of cells more current is produced
10. Given 4 resistors of 4 ohms each, two of them connected in a series to a cell of IR of 2 Ohms then they are connected in parallel to the same cell. calculate the ratio of the respective current in the set-up
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ISBN: 978-1337614689
9th edition
Authors: James M. Wahlen, Stephen P. Baginski, Mark Bradshaw
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