Tag Archives: Solar cell
Electric and Magnetic Fields.
22 AugStatement  Spec ref  Comments 
explain what is meant by an electric field and recognise and use the expression electric field strength E = F/Q 
83 

draw and interpret diagrams using lines of force to describe radial and uniform electric fields qualitatively 
84 

use the expression F = kQ_{1}Q_{2}/r^{2}, where k = 1/4πε_{0} and derive and use the expression E = kQ/r^{2} for the electric field due to a point charge 
85 

investigate and recall that applying a potential difference to two parallel plates produces a uniform electric field in the central region between them, and recognise and use the expression E = V/d 
86 

investigate and use the expression C = Q/V 
87 

recognise and use the expression W = ½ QV for the energy stored by a capacitor, derive the expression from the area under a graph of potential difference against charge stored, and derive and use related expressions, for example, W = ½ CV^{2} 
88 

investigate and recall that the growth and decay curves for resistor–capacitor circuits are exponential, and know the significance of the time constant RC 
89 

recognise and use the expression Q = Q_{0} e^{−t/RC}and derive and use related expressions, for exponential discharge in RC circuits, for example, I = I_{0}e^{−t/RC} 
90 

explore and use the terms magnetic flux density B, flux Φ and flux linkage NΦ 
91 

investigate, recognise and use the expression F = BIl sin θ and apply Fleming’s left hand rule to currents 
92 

recognise and use the expression F = Bqv sin θ and apply Fleming’s left hand rule to charges 
93 

investigate and explain qualitatively the factors affecting the emf induced in a coil when there is relative motion between the coil and a permanent magnet and when there is a change of current in a primary coil linked with it 
94 

investigate, recognise and use the expression ε = −d(NΦ)/dt and explain how it is a consequence of Faraday’s and Lenz’s laws 
95 
Related articles
 James Clerk Maxwell (183179) (geoffneilsen.wordpress.com)
 Electrical fields passed through the body generate virtual textures (wired.co.uk)
 gamma ray emission from thunderclouds (tingilinde.typepad.com)
 Disney Revel uses electrical fields for tactile feedback (electronista.com)
 So long, silicon: Researchers create solar panels from cheap copper oxide (extremetech.com)
 A precrack might propagate or stick under mechanical and electrical loading (eurekalert.org)
 Crude oil emulsion stability determination and its implications in enhanced oil recovery (udini.proquest.com)
 An AcneCuring Patch May Be on the Way (bellasugar.com)
Advertisements