If you are looking for the resistance of each resistor in either a series circuit or a parallel circuit you must measure the current I and the voltage V for each resistor. Then calculate its resistance using Ohms Law R = V / I where I = current (Amps), V = voltage (Volts) and R= resistance (Ohms).
Current will be decreased because of the resistance of the ammeter added to the circuit's resistance. In other words total resistance increases.
Voltage will be same in all branches. Voltage= Current * Total Resistance
The current divides itself according to the resistance of each fork. If the resistance is equal, half the total current flows in each leg. The current flowing into the fork always equals the total current flowing into each of the legs.
The current flow in an electrical circuit depends on the applied electromotive force (EMF, measured in volts), and the total resistance along the entire circuit. Rising EMF or dropping resistance cause increased current flow
Series circuit: The total voltage is the sum of the voltage on each component. The total resistance is equal to the sum of the resistance on each component. The total current is equal in every component.
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To calculate the total current in the circuit, you first need to find the total resistance by using the formula for resistors in parallel: 1/Total Resistance = 1/120 + 1/60 + 1/40. Once you have the total resistance, you can use Ohm's Law: Current = Voltage / Total Resistance. Finally, to find the current running through the 40 ohm resistor, you divide the total current by the resistance of the 40 ohm resistor.
ohms law calculation for a series circuit - Total Resistance = Total Voltage divided by Total Current
Current= Volage/Resistance
It depends upon the resistance values. Series resistance is the summation of all of the resistances, but to calculate the parallel is more complicated. Once the total resistance of each configuration is known, find the total current for each then multiply the current by the source voltage and this will provide the power.
You can't. You need to find the information about current -- a homework question normally gives you a hint.
Total resistance.
The current will be zero if there is no voltage.
Current will be decreased because of the resistance of the ammeter added to the circuit's resistance. In other words total resistance increases.
To find resistance from a graph of voltage vs. current, you can calculate the slope of the graph. Resistance is equal to the slope, so you can divide the voltage by the current to determine the resistance. The unit of resistance is ohms (Ω).
A: The EMF and total resistance
Resistance