How should a battery be connected to a diode for proper forward bias?

For a diode to be in proper forward bias, it must be connected such that the anode is more positive than the cathode, allowing current to flow through the diode. This configuration is crucial because the anode of a diode is designed to allow current to enter, while the cathode acts as the exit point for current.

When connecting a battery, the positive terminal of the battery provides the positive voltage, necessary for forward biasing the diode. By connecting the positive terminal of the battery to the anode and the negative terminal to the cathode, the diode is forward-biased and will conduct electricity. This setup ensures that the electric field within the diode allows for the effective movement of charge carriers, which is essential for allowing current to flow.

The other configurations do not create forward bias. For instance, connecting the negative terminal to the anode would prevent the diode from conducting, as the anode would not meet its required positive voltage condition. Similarly, connecting both sides to the cathode or both sides to the anode fails to create the necessary voltage differential for forward biasing.