# How much current flows through the bar?

• MrDMD83
V=IR, P=IV, Q=It, W=QV, E=1/2 m v^2, E1= E2, E1 - E2 = 0, E1 - E2 = -W.In summary, the conversation discusses the setup of two conducting rails that are tilted upwards at an angle of 30.0°, with a vertical magnetic field of 0.053 T. A 0.20 kg aluminum rod, with a length of 1.6 m, slides down the rails without friction at a constant velocity. The question at hand is how much current flows through the bar.
MrDMD83
The two conducting rails in the drawing are tilted upwards so they make an angle of 30.0° with respect to the ground. The vertical magnetic field has a magnitude of 0.053 T. The 0.20 kg aluminum rod (length = 1.6 m) slides without friction down the rails at a constant velocity. How much current flows through the bar?

MrDMD83 said:
The two conducting rails in the drawing are tilted upwards so they make an angle of 30.0° with respect to the ground. The vertical magnetic field has a magnitude of 0.053 T. The 0.20 kg aluminum rod (length = 1.6 m) slides without friction down the rails at a constant velocity. How much current flows through the bar?

What have you tried so far?

F=ILBsin(x)

## 1. What is current and how is it measured?

Current is the rate of flow of electric charge and is measured in amperes (A). It can be measured using a device called an ammeter.

## 2. How does the amount of current affect the bar?

The amount of current flowing through the bar can affect its temperature, magnetism, and conductivity. It can also cause the bar to heat up and potentially melt if the current is too high.

## 3. What factors determine the amount of current flowing through the bar?

The amount of current flowing through the bar is determined by the voltage applied to the circuit and the resistance of the bar. According to Ohm's Law, the current is directly proportional to the voltage and inversely proportional to the resistance.

## 4. Can the current flowing through the bar be controlled?

Yes, the current can be controlled by adjusting the voltage or by adding resistors to the circuit. This is important in ensuring the bar does not overheat or damage other components in the circuit.

## 5. Is the amount of current always constant in a circuit?

No, the amount of current can vary depending on the resistance and voltage changes in the circuit. In some cases, the current may also fluctuate due to external factors such as temperature or humidity.

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