some batterys have a line on them which shows how much they have left
To find the net resistance of the circuit connected to the battery in the figure, you need to calculate the total resistance by adding up the individual resistances in the circuit.
Use Ohm's law. V = I * R where V is voltage in volts, I is current in amperes, and R is resistance in ohms.
You could put a know resistive load on the battery and then monitor the voltage across the load until the battery was at zero volts. Using Ohm's Law you can calculate the current at any time. Current = Voltage / Resistance. You can multiply the average current times the number of hours for the battery to go to zero.
No, it is desirable for a battery to have a low internal resistance.
Ohm's law: Voltage is resistance times current. 80 ohms time 0.5 amperes = 40 volts.
The voltage of the battery, and the resistance of the circuit (including the resistance of the wire and the internal resistance of the battery).
The battery internal resistance chart provides data on how much resistance the battery has to the flow of electricity within it. This information can help determine the battery's efficiency and performance.
The value of internal resistance of 1.5 volt battery is 0.5 ohms.
You need to calculate the equivalent resistance. For instance, if the three resistors are connected in series, simply add all the resistance values up. Then, you calculate the current (in amperes) using Ohm's Law (V=IR); that is, you need to divide the voltage by the resistance.
There is internal resistance in a battery because a battery is not an ideal voltage source. It may be close, but it is not ideal. As a result, analytically, there will be some series resistance, resistance which places a limit on the maximum current that the battery can provide. While no battery is ideal, most are sufficiently ideal to not require any consideration of the internal resistance. If your circuit is dependent on the internal resistance of a battery, then it is probably not well suited for that application.
Resistance is resistance , no matter if it is contact resistance or any other resistance. And formula is R = V / I.
To calculate the resistance for a slip ring motor, there is an equation that must be solved. This is Torque = S/R. S is the slip of the motor and R is the resistance of the motor.