In Figure 21.6b, as the applied voltage increases, does the resistance of the diode (a) increase, (b) decrease, or (c) remain the same?

A nonlinear current-potential difference curve for a semiconducting diode. This device does not obey Ohm's Law.

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Aerielle Anne BeltranLv10

12 Nov 2020

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Related questions

Recall that an inductor is designed to oppose any change in current in the circuit. Although an inductor has no resistance, there is a potential difference across the ends of the inductor. Unlike the case for the resistor, and do not reach maximum values at the same time. The voltage reaches a maximum before the current.The maximum potential difference across the inductor is.By defining the quantity as the inductive reactance , can be rewritten as . This equation is similar to Ohm's law.

True/False?

1. Ohm's Law isvalid when for a given piece of material theratio V/I is the samefor a wide range of voltages andcurrents.

2. For anOhmic conducting material the resistivity depends onthe electricfield and the current density.

3. Acurrent of 0.5 A exists in a 60-Ohm lamp. The appliedpotentialdifference is 30V.

4. Avoltage V is applied to a device of resistance R and thecurrentthrough the device is i. If the device obeysOhmÃ¢â¬â¢s law,then the current will increase to 2iif the voltage is increased to2V

5. Theends of wire A are connected to the terminals of abattery andthere is current in the wire. If the wire A is replacedwithanother wire, B, which has two times smaller resistivity thanA,the resulting current in B will be twice larger than the currentinA.

Explain the distinction between an ohmic and non-ohmic material, in terms of how the current and resistance behave as the voltage difference across the material is changed.

Now, imagine a single-loop circuit with a battery, two wires, and a 10 Ohm resistor. The wires are also ohmic, but with a resistance much smaller than the 10 Ohm resistor. Despite the disparity in resistance, the current in the wire is the same as that through the resistor since they are in series. Using Ohm's Law, explain how this uniformity in current relates to (or arises from) the individual potential differences across the wire and resistor.