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1 of 3. In the circuit shown, the capacitor is charged. After the switch is closed, the voltage across the capacitor will be best represented by. 2. 1. v C. v C. i. t. q. C. t. L. 4. 3. v C. v C. t. t. 2. 2 of 3.

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  1. 1 of 3 In the circuit shown, the capacitor is charged. After the switch is closed, the voltage across the capacitor will be best represented by 2 1 vC vC i t q C t L 4 3 vC vC t t 2

  2. 2 of 3 • In the circuit shown, once the switch is closed, the current flowing in the circuit • Is in phase with • Is out of phase with (leads/lags by 180 deg) • Leads by 90 deg (1/4 cycle) • Lags by 90 deg (1/4 cycle) • the voltage across the capacitor. i q C L 3

  3. 3 of 3 • The “true” origin of magnetic phenomena in the universe lies with • Conservation of Energy. • Newton’s Laws of Motion. • Einstein’s Special Theory of Relativity. • Maxwell’s Equations. 4

  4. FB BB I I Current is due to counterpropagation of positive and negative charges (like Si). View the system in the frame of reference of the wires (the Si crystal itself) What is force of B on A? Why? A B  +  +  +  + v v v v  +  +  +  +  +  +

  5. FB Wire B appears negatively charged to “+” in wire A. Electrostatic attraction force arises. Same thing happens to “-” in ITS frame of reference! View the system in the frame of reference of a “+” particle in wire A. All “+” particles are at rest. “Relativistic space contraction” occurs, as shown (greatly exaggerated). The “-” particles get closer together, the “+” move farther apart. What is force of B on A? Why? v A B v + +   + +   2v 2v  +  +   + +   + +

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  7. 1 of 3 In the circuit shown, the capacitor is charged. After the switch is closed, the voltage across the capacitor will be best represented by 2 1 vC vC i t q C t L 4 3 vC vC t t 9

  8. 2 of 3 • In the circuit shown, once the switch is closed, the current flowing in the circuit • Is in phase with • Is out of phase with (leads/lags by 180 deg) • Leads by 90 deg (1/4 cycle) • Lags by 90 deg (1/4 cycle) • the voltage across the capacitor. i q C L 10

  9. 3 of 3 • The “true” origin of magnetic phenomena in the universe lies with • Conservation of Energy. • Newton’s Laws of Motion. • Einstein’s Special Theory of Relativity. • Maxwell’s Equations. 11

  10. PROJECTION SCREEN 1 4 1 4 1 4 1 4 2 5 2 5 2 5 2 5 3 6 3 6 3 6 3 6 HAND IN TODAY’S ACTIVITIES SHEETS 12

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