CH5 CQ

• Figures demonstrate four current-voltage characteristics of certain resistances. Which of them demonstrates the Ohmic behavior?

  Linear from origin
• Figures demonstrate four dependences of resistance on current flowing through it. What characteristics corresponds to Ohmic behavior of resistance?

  Flat horizontal line
• Consider two electric bulbs. Bulb #1 has resistance of operation twice as big as bulb #2. These two bulbs are included into circuit in such a way that voltage drops across them is equal. What bulb will produce the greater illumination?

  Bulb #2
• Consider two electric bulbs. Bulb #1 has resistance of operation twice as big as bulb #2. Now these two bulbs are connected in a circuit so that currents flowing through them are the same. What bulb will produce the greater illumination now?

  Bulb #1
• Check the circuit consisting out of 3 resistors (not identical), ideal battery and switch S. Resistor 2 and 3 are in series with resistor 1 but parallel to each other; only resistor 3 is after the switch. After closing the switch S the equivalent resistance of this circuit:

  decreases

  
• Check the circuit consisting out of 3 resistors (not identical), ideal battery and switch S. Resistor 2 and 3 are in series after 1, but parallel to each other. Resistor 3 is the only one after the switch. After closing the switch S current through resistor R1 :

  Increases
• Check the circuit consisting out of 3 resistors (not identical), ideal battery and switch S. Resistors 2 and 3 are in series after 1, but parallel to each other. Resistor 3 is the only one after the switch. After closing the switch S voltage on resistor R2 :

  decreases

  
• Check the circuit consisting out of 3 resistors (not identical), ideal battery and switch S. Resistors 2 and 3 are in series after 1, but parallel to each other. Only resistor 3 is after the switch. After closing the switch S current through R2:

  decreases