An object at the center of curvature of a concave mirror forms an inverted image at the center of curvature itself
Indicate whether the statement is true or false
TRUE
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A metal cylinder of radius 2.0 mm is concentric with another metal cylinder of radius 5.0 mm. If the space between the cylinders is filled with air and the length of the cylinders is 50 cm,
what is the capacitance of this arrangement? (k = 1/4??0 = 8.99 × 109 N • m2/C2) A) 33 pF B) 60 pF C) 22 pF D) 30 pF E) 11 pF
A current reading is obtained by properly placing an ammeter in a circuit consisting of one resistor and one battery. As a result,
A) the voltage drop across the resistor increases. B) the current flowing in the circuit increases. C) the current flowing in the circuit decreases. D) the current flowing in the circuit does not change.
Force on a Wire: The magnetic force on a current-carrying wire in a magnetic field is the strongest when
A. the current is in the direction of the magnetic field lines. B. the current is in the direction opposite to the magnetic field lines. C. the current is at a 180° angle with respect to the magnetic field lines. D. the current is perpendicular to the magnetic field lines. E. the current is at a 0° angle with respect to the magnetic field lines.