Engineering Board Exam Reviewer · Physics · medium
How much work is required to move a 2 C charge through a potential difference of 500 V?
- 250 J
- 1.0 mJ
- 1000 J
- 4 mJ
Answer
B. 1.0 mJ
Solution
W = qV = (2 × 10-6)(500) = 1.0 × 10-3 J = 1.0 mJ.
More Physics questions
- What is the electric field strength 30 cm from a point charge of 5 nC? (k = 8.99 × 109 N· m2/C2)
- If the distance between two charges is halved, the electrostatic force between them becomes:
- What is the force between two point charges of 2 C and 3 C separated by 10 cm in air? (k = 8.99 × 109 N· m2/C2)
- Polarized light of intensity I0 passes through a polarizer whose axis makes 60° with the light's plane of polarization. What is the…
- In Young's double-slit experiment, light of wavelength 600 nm passes through slits 0.2 mm apart onto a screen 1 m away. What is the…
- Two thin lenses with focal lengths of +20 cm and −50 cm are placed in contact. What is the power of the combination?
- A concave mirror has a radius of curvature of 40 cm. What is its focal length?
- A lens has a focal length of +25 cm. What is its power?
- An object is placed 10 cm in front of a converging lens of focal length 20 cm. Describe the image.
- An object is placed 30 cm in front of a converging lens of focal length 10 cm. Where is the image formed?