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Connect a conductor with a resistance of 10 ohm to a certain power supply. Through 5C electric quantity and current, 30J work is done on the conductor, and the sum of power supply voltage and power supply voltage is calculated?
W=IIRt=QIR=QU
U=30/5=6V
Where can I find the exercises of current, resistance, Ohm's law, electric work and electric power? Or I can send them to the answer directly. If there are many and good exercises, points will be added
As above
I'll tell you online
In a series circuit, there are two resistors, one 20 ohm and the other 30 ohm. What are their current, voltage, electric power and heat ratio in parallel?
The resistance ratio is 2:3 in series circuit, the current is equal. So the current ratio is 1:1. In series circuit, the greater the resistance, the greater the voltage at both ends. The resistance ratio is equal to the voltage ratio, so the voltage ratio is 2:3
The principle of using five 10 ohm resistors in parallel to get 2 ohm resistance~
How to use the formula of 1 / r = 1 / R1 + 1 / R2 and R = r1r2 / R1 + R2
The formula r = R 1 R 2 / R 1 + R 2 is only applicable to two resistors in parallel
1 / r = 1 / R1 + 1 / r2 + / R3 +... + 1 / R5 = 5 / 10, so r = 2 Ω
Or the same resistance in parallel can be calculated by R and = R / N, n is the number of the same resistance in parallel
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